Susan Dentzer reports on health issues surrounding the anthrax threats.
Ray Suarez examines the medical implications of anthrax with Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases.
Capitol Police closed a dozen Senate offices today to inspect the ventilation system after a letter addressed to Senate Majority Leader Tom Daschle tested positive for anthrax.
A seven-month-old boy who visited the offices of ABC News in New York on Sept. 28 has been diagnosed with cutaneous anthrax -- the "skin" form of the disease. The boy is the son of an ABC freelance producer.
The FBI and health officials search for the source of the anthrax-laced letters sent to the Capitol and NBC.
Ray Suarez examines the medical implications of anthrax with Neal Cohen, New York City health commissioner.
Five people have now shown up as being exposed to anthrax after a contaminated letter at NBC Nightly News was identified.
A letter addressed to Senate Majority Leader Tom Daschle has tested positive for anthrax.
In Florida today, officials announced that they had found no additional cases of anthrax among the 965 people tested.
A NBC Nightly News employee in New York has tested positive for a skin anthrax infection, not the inhaled form of anthrax that killed a Florida man last week.
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